Tool guide for cable tool drills



Oct. 9,1945. G. R. WATSON 2,386,281.

TOOL GUIDE FOR CABLE TOOL DRILLS Filed May 7, 1943 2 Sheets-Sheet 1 e04ye J1. Via/Z5012,

INVENTOR.

ATTORNEY-9.

Oct. 9, 1945. WATSQN I I 2,386,281

TOOL GUIDE FOR CABLE TOOL DRILLS Filed May 7, '1945 2 Sheets-Sheet 2 UNI-TED STAT-ES OFFICE j r j: 1 2,386,281" f F ew 99 PRILLS I George R.--Watson, Waukegan, 111., assignor to 1 Bu'cyrus- Erieo Company, South Milwaukee,

Wis.,' a corporationof Delaware 7 Applic t on Ma 7; 1943', Seria'liNo. 486,025

6 Claims. "(CL 255-41) 7 IfMy iii-tendon relates to new and useful im the main frame of a drill; supported by creeping provementsin toolfguides for cable-tool drills; i traction mounting l2.

' Suich drills, per se, arewell known; 'f The frame ll supports a mast 13 (called der- ,In's'uch drills a ropepa'sses'; froriia winch drum rick in the art), a motor M, a winch 15, a spudon the mainframe, around a heel sheave ator ding gear l6, and associated driving connections,

nearthe 'pivot ofiaspudding beam; thence under, not numbered. l a sheave at the oscillating end oithe spuddirig From the winch l5, a rope 81' runs around a 3m; ence over a sheave at the upper end of heel sheave l8, thence under a spudding-sheave a mast, and thence vertically oownwaromto the l9, thence over a sheave at the top of the hol'ejwhich is" being drilled in thejfground'fIAt if derrick l3, thence'down'to the drilling tools 2|. tlielo-wergend of this rope is a string of per- Thespudding gear [6 isclutched to and unouss'ion drill'in'gtools. j The spudding beam is' be clutched from a drive connection with the motor cillated byja ",pitman; actuated by a rotatmg It, by means of a clutchv (not sho-wn)."" cranky Jjl The spudding-sheave I9 is mounted on the free iAs therope'jis' paid'out to lower'the tools into, l5 end of a spudding beam22, which in turn is pivtliehole, 'it-isnecessarythat the tools beguided oted on h ri o t p s 23 o the frame seas to start drilling "the hole vertically. Ac-j The spudding-beam is rocked "up and down by cordingly there] is usuallypr'ovided on the mast the rotation of, the' j'spudding gear I6, acting or the drill,"a gadget known asatool guideQll th ou h t a'n' Preierably the tool guide should be snob: b The winch l5 iscontrolled by means of a con struete'or that itwill open to admit the tools, v nti n l driv lut b e and andve s rather than compelling them to be threaded V W through it from above. Similarly, and even more The operation of all se v n l pa s important, it should open so that the rope can Will be a y un be Withdrawn or inserted While the tools are in 25 So u for t e tti f y v t The the hole. tool guide 25, which is the subject of my inven- Also the tool guide serves as a better guide, if it tion, is mounted on the derrick l3. be relatively long. For the details of this tool guide, let us now Accordingly it is the principal object of my inturn to Figures 4 and 5. vention to devise a tool guide which shall possess y o guide is a be ed ow Cylinder, p t the above-mentioned desirable characteristics. lengthwise into tWO pp a y t ca In addition to my principal objects, above parts 26 d t t I have worked t a number of novel and Part 26 is pivotally supported on derrick [3 by useful details, which will be readily evident as two fixed hinges Part 27 is Di y s nthe description progresses, ported 0n derrick l3 by hinges 29 which permits My invention consists in the novel parts and upward sliding of the part 27; and by a hinge in the combination and arrangement thereof, which rests on a Washer 3 on vertioally reciprowhich are defined in the appended claims, and cable rod Washer 32 is keyed to this f which one embodiment is exem lifi d in the liote the offset nature of all the hinges; by accempanying drawings which are hereinafter this is meant that the pivots of the hinges are at particularly described and explained a considerable distance from the hinged parts.

Throughout the description, the same reference z no i zg as to the distance of the number is applied to the same member or to ges rom eat: 0

similar members Part 26 carries upwardly engaging jaws 34. f Part 21 carries downward] en a in aws 35. i g xig g slde elevatlon of a embodymg Each pair of jaws constitut s a l oc k, f0 lock the two ars 0 he 001 i t 'n Figure 2 is an enlarged side elevation of the closegpotsiticfmt t gu de ogether when 1 m chanism which actuates my tool guide- Each part carries a handle 36, to assist in Figures 3, 4 and 5 are enlarged front elevaswinging the part about its pivots.

tions of my tool guide, Figure 3 showing the guide l e F ur 4 howin one half of the guide swiveling about a horizontal axis, and carries two elevated and opened, and Figure 5 showing both lugs 38. Connecting lever 39 is pivoted at its hotsides opened. tom end to these lugs, and at its top to the bot- Referrmg now to Figure 1, we see that H is tom end of reciprocable rod 33.

Hand-lever 31 is pivoted on derrick I3 for The opening of my tool guide is accomplished as follows. Starting in the closed position, shown in Figure 3 and in the full lines of Figure 2, hand lever 31 is swung forwardly and upwardly, thus lifting rod 33, and thereby lifting part 21, and disengaging jaws 35 from jaws 34. This position is shown dotted in Figure 2-. The lifting means is now in toggle, and may be let go of. Grasping the handle 36 of p rt 21 it may now be swung aside, into'the position shown in Figure 4. 1

Grasping the handle 3'6 of part 26, it too may now be swung aside into the position shown in Figure 5. v

Note also that the lifting means is in toggle in its lower position.

Other means of locking the two parts together zto which'the. guide is to be attached; hinges to could be employed,

Having now described and illustrated one form ing the last mentioned means in disengaged position.

3. A tool guide in accordance with claim 1, further characterized by having means for looking the last mentioned means in engaged position.

4. A tool guide in accordance with claim 1, further characterized by the fact that the hinges are ofiset.

5. A tool guide in accordance with claim 1, further characterized by having means for locking the last mentioned means in both disengaged of my invention, 1 wish it to be understood that I mount one such part to swing horizontally away from the second such part; hinges to mount said second part to swing horizontally away from said first part, and to permit said second .part to be moved vertically with respect to said first part; interlocking elements; carried by the two parts, and being such that these elements will be engaged and disengaged by the relative vertical movement of the two parts, when the two parts are closed together; and means for moving the second part vertically with respect to the first part.

f2. A tool guide in accordance with claim 1, further characterized by having means for lockand engaged positions respectively. 6. Atool guide for a cable-tool drill, comprising: two hollow semi-cylindrical parts, divided from each other along the major axis of the drill mount one such part to swing horizontally away from the second such part; hinges to mount said second'part to swing horizontally away from said first part, and to permit said second part to be moved vertically with respect to said first part; interlocking elements, carried by the two parts, and being such that these elements will be engaged and disengaged by the relative vertical movement of the two parts, when the two parts are closed together; and means for moving the second part vertically with respect to the first part; saidtool guide being further characterized by the fact'that the last mentioned means comprises: a pitman engaging a vertically moveable portion of the hinge of the second part, in such manner that vertical reciprocation of the pitman will raise and lower said second part; a crank to actuate the pitman, said crank and said pitman being so relatively proportioned and located that the crane will lock the pitman in toggle at its extreme lower position and at its extreme upp r position; and manual means for rotating the crank.

GEORGE R. WATSON. 

